Bullhead Sharks: Family Heterodontidae
Species: Heterodontus francisci (Girard, 1855); from the Greek hetero (different) and odont (tooth) and the Latin francisci (referring to San Francisco). (They have a small pointed tooth at the front of their jaw and a blunt tooth at the rear.)
Alternate Names: Bullhead Shark, Port Jackson shark, horned shark, hornback shark. Called tiburón cabeza de toro, tiburón cornudo or tiburón puerco in Mexico.
Identification: Horn sharks are spotted sharks with a somewhat pig-like snout. They have a strong spine at the front of each dorsal fin (which accounts for their name) and an anal fin. Their coloring is tan to dark brown or grayish with black spots above, pale yellowish below.
Size: Reported to 48 inches, but the largest verified was just over 38 inches long and 22 pounds. Most hornies caught from piers are under 30 inches in length.
Horn shark caught at the Cabrillo Mole in Avalon
Range: Found from the Gulf of California to San Francisco.
Habitat: Prefers rocky areas although also found near sandy areas that contain kelp. They are nocturnal, bottom-feeding foragers who prefer to spend their daylight hours resting on the bottom or in caves and crevices. At night they head out in their search for food—primarily squids, urchins, crustaceans, anemones and mollusks—but rarely are they found more than six feet from the bottom.
Shoreline: Occasionally caught by anglers fishing rocky areas near kelp.
Boats: Sometimes taken by boaters and kayakers fishing the southern California kelp beds.
Bait and Tackle: Crabs, shrimp, squid and small fish are prime baits but hornies appear to take almost any natural bait. Most horn sharks taken by pier anglers are fairly small fish so light-to-medium tackle equipped with size 2 to 2/0 hooks will suffice.
Food Value: Reported to be quite tasty, similar to most other sharks.
Comments: An interesting little shark. Small horn sharks are frequently sold in aquarium shops where they command top prices. They are generally harmless but anglers should be careful of the dorsal spines and be aware that agitated fish may try to bite careless handlers.
Horn sharks are in the Class Chondrichthyes and Subclass Elasmobranchii (as are all sharks and rays) but in the Superorder Galea, which only includes some of the sharks found at California piers. Many of the sharks found at piers are in the Superorder Squalea, which includes sharks as well as guitarfish and rays. Thus some of the sharks are more closely related to rays than to other sharks.